Emergency Triage & Crash Recovery of E-Learning Platform
Client: SkillBridge Academy (Online Education Platform)
Responding to a catastrophic production crash 20 minutes before a 10,000-student webinar launch, restoring database stability and scaling servers.
The Problem
During a nationwide marketing promotion, the platform database locked up completely due to un-indexed queries and connection pool exhaustion, rendering the site 100% inaccessible.
Key Constraints
- •Live webinar starting in under 1 hour with thousands of paying attendees waiting
- •Previous contractor was unreachable
Technical Approach & Execution
Joined emergency bridge within 15 minutes, identified locking queries using pg_stat_activity, killed runaway transactions, increased connection pool limits, and deployed Redis query caching.
Emergency Database Lock Release
Identified blocking table locks caused by un-indexed analytics logging, terminated deadlocked transactions safely.
Connection Pool & Cache Layer Stabilization
Implemented PgBouncer connection pooling and cached live session metadata in Redis to absorb the incoming traffic spike.
Cloud & Deployment
- Linux VPS Cluster
- PgBouncer Connection Pooler
- PostgreSQL with Emergency Indexing
- Redis Session Caching
Tools & Languages
Key Engineering Lessons Learned:
- •Immediate forensic query inspection prevented the client from making panic server restarts that would have prolonged downtime
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